Sakkyun is a succubus demon with a pretty straightforward personality—she loves being called cute and basically lives for attention. The interesting part is that she happens to look almost identical to Princess Suya, which sets up a whole thing between them. They end up making a deal where Sakkyun trains to act more like the princess. Their motivations are totally different though: Sakkyun just wants to be as popular and admired as Suya is, while Suya's really just looking for a convenient body double to use. Once Sakkyun actually figures out what Suya's really like underneath all that royal polish, she develops a serious fear of her. The irony's pretty dark when you think about it—she wanted to be like Suya, then realized she's terrified of her instead.
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